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Population Dynamics Of Ludwigia Leptocarpa (Onagraceae) And Some Factors Affecting Size Hierarchies In A Natural Population, Rebecca W. Dolan, Rebecca R. Sharitz
Population Dynamics Of Ludwigia Leptocarpa (Onagraceae) And Some Factors Affecting Size Hierarchies In A Natural Population, Rebecca W. Dolan, Rebecca R. Sharitz
Rebecca W. Dolan
Germination cohorts of Ludwigia leptocarpa, a semi-aquatic annual plant were marked in the field at time of establishment and followed through the 1981 and 1982 growing seasons at a site in southern South Carolina. Data from each cohort were pooled to determine demographic characteristics of the population as a whole, then analyzed separately to determine the effect of time on germination on survivorship, relative growth rate, and adult size. Changes in numbers of L. leptocarpa fit a Deevey Type II survivorship curve. This and other characteristics of the species classify it as ‘r-selected’. Aspects of the life history may reflect …